#include <stdio.h> 
#include <string.h> 
#include <iostream> 
#include <sys/socket.h>     
#include <netinet/in.h>     
#include <arpa/inet.h>     
#include <netdb.h> 
   
#include <event.h> 
using namespace std; 
   
// 事件base 
struct event_base* base; 
   
// 读事件回调函数 
void onRead(int iCliFd, short iEvent, void *arg) 
{ 
    int iLen; 
    char buf[1500]; 
   
    iLen = recv(iCliFd, buf, 1500, 0); 
   
    if (iLen <= 0) { 
        cout << "Client Close" << endl; 
   
        // 连接结束(=0)或连接错误(<0)，将事件删除并释放内存空间 
        struct event *pEvRead = (struct event*)arg; 
        event_del(pEvRead); 
        delete pEvRead; 
   
        close(iCliFd); 
        return; 
    } 
   
    buf[iLen] = 0; 
    cout << "Client Info:" << buf << endl; 
} 
   
// 连接请求事件回调函数 
void onAccept(int iSvrFd, short iEvent, void *arg) 
{ 
    int iCliFd; 
    struct sockaddr_in sCliAddr; 
   
    socklen_t iSinSize = sizeof(sCliAddr); 
    iCliFd = accept(iSvrFd, (struct sockaddr*)&sCliAddr, &iSinSize); 
   
    // 连接注册为新事件 (EV_PERSIST为事件触发后不默认删除) 
    struct event *pEvRead = new event; 
    event_set(pEvRead, iCliFd, EV_READ|EV_PERSIST, onRead, pEvRead); 
    event_base_set(base, pEvRead); 
    event_add(pEvRead, NULL); 
} 
   
int main() 
{ 
   
    int iSvrFd;   
    struct sockaddr_in sSvrAddr; 
                 
    memset(&sSvrAddr, 0, sizeof(sSvrAddr));   
    sSvrAddr.sin_family = AF_INET;   
    sSvrAddr.sin_addr.s_addr = inet_addr("127.0.0.1");     
    sSvrAddr.sin_port = htons(8888);    
                               
    // 创建tcpSocket（iSvrFd），监听本机8888端口   
    iSvrFd = socket(AF_INET, SOCK_STREAM, 0);   
    bind(iSvrFd, (struct sockaddr*)&sSvrAddr, sizeof(sSvrAddr));   
    listen(iSvrFd, 10); 
   
    // 初始化base 
    base = event_base_new(); 
       
    struct event evListen; 
    // 设置事件 
    event_set(&evListen, iSvrFd, EV_READ|EV_PERSIST, onAccept, NULL); 
    // 设置为base事件 
    event_base_set(base, &evListen); 
    // 添加事件 
    event_add(&evListen, NULL); 
       
    // 事件循环 
    event_base_dispatch(base); 
   
    return 0; 
}
